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SubjectRe: [PATCH 03/22] NTB: Alter NTB API to support both inbound and outbound MW based interfaces
Hi Serge,

[auto build test ERROR on ntb/ntb-next]
[also build test ERROR on v4.9-rc7 next-20161130]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Serge-Semin/NTB-Alter-kernel-API-to-support-multi-port-devices/20161201-014939
base: https://github.com/jonmason/ntb ntb-next
config: x86_64-randconfig-s5-12010242 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

Note: the linux-review/Serge-Semin/NTB-Alter-kernel-API-to-support-multi-port-devices/20161201-014939 HEAD ced946cf007084caf9a2ec237c898bbf1940b440 builds fine.
It only hurts bisectibility.

All errors (new ones prefixed by >>):

drivers/ntb/ntb_transport.c: In function 'ntb_free_mw':
>> drivers/ntb/ntb_transport.c:685:2: error: too few arguments to function 'ntb_mw_clear_trans'
ntb_mw_clear_trans(nt->ndev, num_mw);
^~~~~~~~~~~~~~~~~~
In file included from drivers/ntb/ntb_transport.c:62:0:
include/linux/ntb.h:739:19: note: declared here
static inline int ntb_mw_clear_trans(struct ntb_dev *ntb, int pidx, int widx)
^~~~~~~~~~~~~~~~~~
drivers/ntb/ntb_transport.c: In function 'ntb_set_mw':
>> drivers/ntb/ntb_transport.c:742:7: error: too few arguments to function 'ntb_mw_set_trans'
rc = ntb_mw_set_trans(nt->ndev, num_mw, mw->dma_addr, mw->xlat_size);
^~~~~~~~~~~~~~~~
In file included from drivers/ntb/ntb_transport.c:62:0:
include/linux/ntb.h:718:19: note: declared here
static inline int ntb_mw_set_trans(struct ntb_dev *ntb, int pidx, int widx,
^~~~~~~~~~~~~~~~
drivers/ntb/ntb_transport.c: In function 'ntb_transport_probe':
>> drivers/ntb/ntb_transport.c:1072:13: error: too few arguments to function 'ntb_mw_count'
mw_count = ntb_mw_count(ndev);
^~~~~~~~~~~~
In file included from drivers/ntb/ntb_transport.c:62:0:
include/linux/ntb.h:669:19: note: declared here
static inline int ntb_mw_count(struct ntb_dev *ntb, int pidx)
^~~~~~~~~~~~
>> drivers/ntb/ntb_transport.c:1106:8: error: implicit declaration of function 'ntb_mw_get_range' [-Werror=implicit-function-declaration]
rc = ntb_mw_get_range(ndev, i, &mw->phys_addr, &mw->phys_size,
^~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
drivers/ntb/test/ntb_perf.c: In function 'perf_free_mw':
>> drivers/ntb/test/ntb_perf.c:455:2: error: too few arguments to function 'ntb_mw_clear_trans'
ntb_mw_clear_trans(perf->ntb, 0);
^~~~~~~~~~~~~~~~~~
In file included from drivers/ntb/test/ntb_perf.c:60:0:
include/linux/ntb.h:739:19: note: declared here
static inline int ntb_mw_clear_trans(struct ntb_dev *ntb, int pidx, int widx)
^~~~~~~~~~~~~~~~~~
drivers/ntb/test/ntb_perf.c: In function 'perf_set_mw':
>> drivers/ntb/test/ntb_perf.c:491:7: error: too few arguments to function 'ntb_mw_set_trans'
rc = ntb_mw_set_trans(perf->ntb, 0, mw->dma_addr, mw->xlat_size);
^~~~~~~~~~~~~~~~
In file included from drivers/ntb/test/ntb_perf.c:60:0:
include/linux/ntb.h:718:19: note: declared here
static inline int ntb_mw_set_trans(struct ntb_dev *ntb, int pidx, int widx,
^~~~~~~~~~~~~~~~
drivers/ntb/test/ntb_perf.c: In function 'perf_setup_mw':
>> drivers/ntb/test/ntb_perf.c:562:7: error: implicit declaration of function 'ntb_mw_get_range' [-Werror=implicit-function-declaration]
rc = ntb_mw_get_range(ntb, 0, &mw->phys_addr, &mw->phys_size,
^~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
drivers/ntb/hw/amd/ntb_hw_amd.c: In function 'amd_ntb_link_enable':
drivers/ntb/hw/amd/ntb_hw_amd.c:256:24: error: 'NTB_TOPO_SEC' undeclared (first use in this function)
if (ndev->ntb.topo == NTB_TOPO_SEC)
^~~~~~~~~~~~
drivers/ntb/hw/amd/ntb_hw_amd.c:256:24: note: each undeclared identifier is reported only once for each function it appears in
drivers/ntb/hw/amd/ntb_hw_amd.c: In function 'amd_ntb_link_disable':
drivers/ntb/hw/amd/ntb_hw_amd.c:277:24: error: 'NTB_TOPO_SEC' undeclared (first use in this function)
if (ndev->ntb.topo == NTB_TOPO_SEC)
^~~~~~~~~~~~
drivers/ntb/hw/amd/ntb_hw_amd.c: At top level:
>> drivers/ntb/hw/amd/ntb_hw_amd.c:434:15: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
.mw_count = amd_ntb_mw_count,
^~~~~~~~~~~~~~~~
drivers/ntb/hw/amd/ntb_hw_amd.c:434:15: note: (near initialization for 'amd_ntb_ops.mw_count')
>> drivers/ntb/hw/amd/ntb_hw_amd.c:435:2: error: unknown field 'mw_get_range' specified in initializer
.mw_get_range = amd_ntb_mw_get_range,
^
drivers/ntb/hw/amd/ntb_hw_amd.c:435:19: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
.mw_get_range = amd_ntb_mw_get_range,
^~~~~~~~~~~~~~~~~~~~
drivers/ntb/hw/amd/ntb_hw_amd.c:435:19: note: (near initialization for 'amd_ntb_ops.mw_get_align')
drivers/ntb/hw/amd/ntb_hw_amd.c:436:19: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
.mw_set_trans = amd_ntb_mw_set_trans,
^~~~~~~~~~~~~~~~~~~~
drivers/ntb/hw/amd/ntb_hw_amd.c:436:19: note: (near initialization for 'amd_ntb_ops.mw_set_trans')
drivers/ntb/hw/amd/ntb_hw_amd.c: In function 'amd_init_ntb':
drivers/ntb/hw/amd/ntb_hw_amd.c:880:7: error: 'NTB_TOPO_PRI' undeclared (first use in this function)
case NTB_TOPO_PRI:
^~~~~~~~~~~~
drivers/ntb/hw/amd/ntb_hw_amd.c:881:7: error: 'NTB_TOPO_SEC' undeclared (first use in this function)
case NTB_TOPO_SEC:
^~~~~~~~~~~~
drivers/ntb/hw/amd/ntb_hw_amd.c: In function 'amd_get_topo':
drivers/ntb/hw/amd/ntb_hw_amd.c:915:10: error: 'NTB_TOPO_SEC' undeclared (first use in this function)
return NTB_TOPO_SEC;
^~~~~~~~~~~~
drivers/ntb/hw/amd/ntb_hw_amd.c:917:10: error: 'NTB_TOPO_PRI' undeclared (first use in this function)
return NTB_TOPO_PRI;
^~~~~~~~~~~~
drivers/ntb/hw/amd/ntb_hw_amd.c:918:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
cc1: some warnings being treated as errors

vim +/ntb_mw_clear_trans +685 drivers/ntb/ntb_transport.c

e26a5843 Allen Hubbe 2015-04-09 679 struct ntb_transport_mw *mw = &nt->mw_vec[num_mw];
e26a5843 Allen Hubbe 2015-04-09 680 struct pci_dev *pdev = nt->ndev->pdev;
b77b2637 Jon Mason 2013-02-01 681
b77b2637 Jon Mason 2013-02-01 682 if (!mw->virt_addr)
b77b2637 Jon Mason 2013-02-01 683 return;
b77b2637 Jon Mason 2013-02-01 684
e26a5843 Allen Hubbe 2015-04-09 @685 ntb_mw_clear_trans(nt->ndev, num_mw);
e26a5843 Allen Hubbe 2015-04-09 686 dma_free_coherent(&pdev->dev, mw->buff_size,
e26a5843 Allen Hubbe 2015-04-09 687 mw->virt_addr, mw->dma_addr);
e26a5843 Allen Hubbe 2015-04-09 688 mw->xlat_size = 0;
e26a5843 Allen Hubbe 2015-04-09 689 mw->buff_size = 0;
b77b2637 Jon Mason 2013-02-01 690 mw->virt_addr = NULL;
b77b2637 Jon Mason 2013-02-01 691 }
b77b2637 Jon Mason 2013-02-01 692
e26a5843 Allen Hubbe 2015-04-09 693 static int ntb_set_mw(struct ntb_transport_ctx *nt, int num_mw,
8c9edf63 Allen Hubbe 2015-07-13 694 resource_size_t size)
fce8a7bb Jon Mason 2012-11-16 695 {
e26a5843 Allen Hubbe 2015-04-09 696 struct ntb_transport_mw *mw = &nt->mw_vec[num_mw];
e26a5843 Allen Hubbe 2015-04-09 697 struct pci_dev *pdev = nt->ndev->pdev;
8c9edf63 Allen Hubbe 2015-07-13 698 size_t xlat_size, buff_size;
e26a5843 Allen Hubbe 2015-04-09 699 int rc;
e26a5843 Allen Hubbe 2015-04-09 700
8c9edf63 Allen Hubbe 2015-07-13 701 if (!size)
8c9edf63 Allen Hubbe 2015-07-13 702 return -EINVAL;
8c9edf63 Allen Hubbe 2015-07-13 703
e26a5843 Allen Hubbe 2015-04-09 704 xlat_size = round_up(size, mw->xlat_align_size);
e26a5843 Allen Hubbe 2015-04-09 705 buff_size = round_up(size, mw->xlat_align);
fce8a7bb Jon Mason 2012-11-16 706
b77b2637 Jon Mason 2013-02-01 707 /* No need to re-setup */
e26a5843 Allen Hubbe 2015-04-09 708 if (mw->xlat_size == xlat_size)
b77b2637 Jon Mason 2013-02-01 709 return 0;
b77b2637 Jon Mason 2013-02-01 710
e26a5843 Allen Hubbe 2015-04-09 711 if (mw->buff_size)
b77b2637 Jon Mason 2013-02-01 712 ntb_free_mw(nt, num_mw);
b77b2637 Jon Mason 2013-02-01 713
e26a5843 Allen Hubbe 2015-04-09 714 /* Alloc memory for receiving data. Must be aligned */
e26a5843 Allen Hubbe 2015-04-09 715 mw->xlat_size = xlat_size;
e26a5843 Allen Hubbe 2015-04-09 716 mw->buff_size = buff_size;
fce8a7bb Jon Mason 2012-11-16 717
e26a5843 Allen Hubbe 2015-04-09 718 mw->virt_addr = dma_alloc_coherent(&pdev->dev, buff_size,
e26a5843 Allen Hubbe 2015-04-09 719 &mw->dma_addr, GFP_KERNEL);
fce8a7bb Jon Mason 2012-11-16 720 if (!mw->virt_addr) {
e26a5843 Allen Hubbe 2015-04-09 721 mw->xlat_size = 0;
e26a5843 Allen Hubbe 2015-04-09 722 mw->buff_size = 0;
8c9edf63 Allen Hubbe 2015-07-13 723 dev_err(&pdev->dev, "Unable to alloc MW buff of size %zu\n",
e26a5843 Allen Hubbe 2015-04-09 724 buff_size);
fce8a7bb Jon Mason 2012-11-16 725 return -ENOMEM;
fce8a7bb Jon Mason 2012-11-16 726 }
fce8a7bb Jon Mason 2012-11-16 727
3cc5ba19 Dave Jiang 2014-08-28 728 /*
3cc5ba19 Dave Jiang 2014-08-28 729 * we must ensure that the memory address allocated is BAR size
3cc5ba19 Dave Jiang 2014-08-28 730 * aligned in order for the XLAT register to take the value. This
3cc5ba19 Dave Jiang 2014-08-28 731 * is a requirement of the hardware. It is recommended to setup CMA
3cc5ba19 Dave Jiang 2014-08-28 732 * for BAR sizes equal or greater than 4MB.
3cc5ba19 Dave Jiang 2014-08-28 733 */
e26a5843 Allen Hubbe 2015-04-09 734 if (!IS_ALIGNED(mw->dma_addr, mw->xlat_align)) {
e26a5843 Allen Hubbe 2015-04-09 735 dev_err(&pdev->dev, "DMA memory %pad is not aligned\n",
3cc5ba19 Dave Jiang 2014-08-28 736 &mw->dma_addr);
3cc5ba19 Dave Jiang 2014-08-28 737 ntb_free_mw(nt, num_mw);
3cc5ba19 Dave Jiang 2014-08-28 738 return -ENOMEM;
3cc5ba19 Dave Jiang 2014-08-28 739 }
3cc5ba19 Dave Jiang 2014-08-28 740
fce8a7bb Jon Mason 2012-11-16 741 /* Notify HW the memory location of the receive buffer */
e26a5843 Allen Hubbe 2015-04-09 @742 rc = ntb_mw_set_trans(nt->ndev, num_mw, mw->dma_addr, mw->xlat_size);
e26a5843 Allen Hubbe 2015-04-09 743 if (rc) {
e26a5843 Allen Hubbe 2015-04-09 744 dev_err(&pdev->dev, "Unable to set mw%d translation", num_mw);
e26a5843 Allen Hubbe 2015-04-09 745 ntb_free_mw(nt, num_mw);

:::::: The code at line 685 was first introduced by commit
:::::: e26a5843f7f5014ae4460030ca4de029a3ac35d3 NTB: Split ntb_hw_intel and ntb_transport drivers

:::::: TO: Allen Hubbe <Allen.Hubbe@emc.com>
:::::: CC: Jon Mason <jdmason@kudzu.us>

---
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